I think it's quite nice that he can say "this entertains me, so I watch it" regardless of potential stigma. Even if a show could somehow be proven to be objectively bad, A) that's still a badass dude, B) that's still a badass beard, and C) that's still a badass dude with a badass beard that makes badass games.

Even if he does what's it really matter? He kept that shit to himself and doesn't go all brony on everybody. And after all he has made such great games that we have all probably sunk an embarrassing amount of time into, that if he wants to watch a show about ponies, he can go right ahead.